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    <meta name="description" content="1 Thread 类的方法序号    方法描述1    public void start() 使该线程开始执行；Java 虚拟机调用该线程的 run 方法。 2    public void run() 如果该线程是使用独立的 Runnable 运行对象构造的，则调用该 Runnable 对象的 run 方法；否则，该方法不执行任何操作并返回。3    public final void set">
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<meta property="og:description" content="1 Thread 类的方法序号    方法描述1    public void start() 使该线程开始执行；Java 虚拟机调用该线程的 run 方法。 2    public void run() 如果该线程是使用独立的 Runnable 运行对象构造的，则调用该 Runnable 对象的 run 方法；否则，该方法不执行任何操作并返回。3    public final void set">
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            <h1 style="display: none">Java多线程实例</h1>
            
            
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                <h2 id="1-Thread-类的方法"><a href="#1-Thread-类的方法" class="headerlink" title="1 Thread 类的方法"></a>1 Thread 类的方法</h2><p>序号    方法描述<br>1    <strong>public void start()</strong> 使该线程开始执行；Java 虚拟机调用该线程的 run 方法。</p>
<p>2    <strong>public void run()</strong> 如果该线程是使用独立的 Runnable 运行对象构造的，则调用该 Runnable 对象的 run 方法；否则，该方法不执行任何操作并返回。<br>3    <strong>public final void setName(String name)</strong> 改变线程名称，使之与参数 name 相同。<br>4    <strong>public final void setPriority(int priority)</strong>  更改线程的优先级。<br>5    <strong>public final void setDaemon(boolean on)</strong> 将该线程标记为守护线程或用户线程。<br>6    <strong>public final void join(long millisec)</strong> 等待该线程终止的时间最长为 millis 毫秒。<br>7    <strong>public void interrupt()</strong> 中断线程。<br>8    <strong>public final boolean isAlive()</strong> 测试线程是否处于活动状态。</p>
<span id="more"></span>
<p><strong>用户线程：无论主线线程是否结束，用户线程都会跑完。非用户线程在主线程跑完后会自动终止</strong></p>
<h2 id="2-通过实现-Runnable-接口方式，实现多线程"><a href="#2-通过实现-Runnable-接口方式，实现多线程" class="headerlink" title="2 通过实现 Runnable 接口方式，实现多线程"></a>2 通过实现 Runnable 接口方式，实现多线程</h2><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br></pre></td><td class="code"><pre><code class="hljs java"><span class="hljs-comment">/**</span><br><span class="hljs-comment"> * 通过实现接口方式，实现多线程</span><br><span class="hljs-comment"> * <span class="hljs-doctag">@author</span> Administrator</span><br><span class="hljs-comment"> **/</span><br><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">ThreadConuer</span></span>&#123;<br><br>	<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">main</span><span class="hljs-params">(String[] args)</span> </span>&#123;<br>		Thread t = <span class="hljs-keyword">new</span> Thread(<span class="hljs-keyword">new</span> PrintString(<span class="hljs-string">&quot;hello&quot;</span>,<span class="hljs-number">1000</span>));<br>	    t.setDaemon(<span class="hljs-keyword">true</span>);	<span class="hljs-comment">//用户线程</span><br>	    t.setName(<span class="hljs-string">&quot;hello&quot;</span>);	<span class="hljs-comment">//修改线程名字</span><br>		t.start();<br>	&#125;<br>&#125;<br><span class="hljs-comment">/**</span><br><span class="hljs-comment"> * 打印字符串n次</span><br><span class="hljs-comment"> * <span class="hljs-doctag">@author</span> Administrator</span><br><span class="hljs-comment"> **/</span><br><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">PrintString</span> <span class="hljs-keyword">implements</span> <span class="hljs-title">Runnable</span> </span>&#123;<br>	String str = <span class="hljs-keyword">null</span>;<br>	<span class="hljs-keyword">int</span> n;<br>	<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-title">PrintString</span> <span class="hljs-params">(String s,<span class="hljs-keyword">int</span> n)</span></span>&#123;<br>		str = s;<br>		<span class="hljs-keyword">this</span>.n = n;<br>	&#125;<br>	<span class="hljs-meta">@Override</span><br>    <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">run</span><span class="hljs-params">()</span> </span>&#123;<br>		<span class="hljs-keyword">for</span>(<span class="hljs-keyword">int</span> i=<span class="hljs-number">0</span>;i&lt;n;i++)<br>          System.out.println(str);<br>    &#125;<br> &#125;<br></code></pre></td></tr></table></figure>
<h2 id="3-通过继承-Thread-类，实现多线程"><a href="#3-通过继承-Thread-类，实现多线程" class="headerlink" title="3 通过继承 Thread 类，实现多线程"></a>3 通过继承 Thread 类，实现多线程</h2><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br></pre></td><td class="code"><pre><code class="hljs java"><span class="hljs-comment">/**</span><br><span class="hljs-comment"> *  通过继承方法。实现多线程</span><br><span class="hljs-comment"> * <span class="hljs-doctag">@author</span> Administrator</span><br><span class="hljs-comment"> **/</span><br><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">ThreadInherit</span></span>&#123;<br><br>	<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">main</span><span class="hljs-params">(String[] args)</span> </span>&#123;<br>		Thread t = <span class="hljs-keyword">new</span> PrintString2(<span class="hljs-string">&quot;Hello&quot;</span>,<span class="hljs-number">1000</span>);<br>	    t.setDaemon(<span class="hljs-keyword">true</span>);	<span class="hljs-comment">//用户线程</span><br>	    t.setName(<span class="hljs-string">&quot;hello&quot;</span>);	<span class="hljs-comment">//修改线程名字</span><br>		t.start();<br>	&#125;<br>&#125;<br><br><span class="hljs-comment">/**</span><br><span class="hljs-comment"> * 打印字符串n次</span><br><span class="hljs-comment"> * <span class="hljs-doctag">@author</span> Administrator</span><br><span class="hljs-comment"> **/</span><br><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">PrintString2</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Thread</span></span>&#123;<br>	String str = <span class="hljs-keyword">null</span>;<br>	<span class="hljs-keyword">int</span> n;<br>	<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-title">PrintString2</span> <span class="hljs-params">(String s,<span class="hljs-keyword">int</span> n)</span></span>&#123;<br>		str = s;<br>		<span class="hljs-keyword">this</span>.n = n;<br>	&#125;<br>	<br>	<span class="hljs-meta">@Override</span><br>    <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">run</span><span class="hljs-params">()</span></span>&#123;<br>		<span class="hljs-keyword">for</span>(<span class="hljs-keyword">int</span> i=<span class="hljs-number">0</span>;i&lt;n;i++)<br>          System.out.println(str);<br>    &#125;<br> &#125;<br></code></pre></td></tr></table></figure>
<h2 id="4-使用-Runnable-和-Thread-共同创建进程。"><a href="#4-使用-Runnable-和-Thread-共同创建进程。" class="headerlink" title="4 使用 Runnable 和 Thread 共同创建进程。"></a>4 使用 Runnable 和 Thread 共同创建进程。</h2><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br></pre></td><td class="code"><pre><code class="hljs java"><span class="hljs-keyword">import</span> java.util.ArrayList;<br><span class="hljs-keyword">import</span> java.util.List;<br><br><br><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">CSA01</span> </span>&#123;<br>	<span class="hljs-keyword">private</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>;<br>	<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">main</span><span class="hljs-params">(String[] args)</span> <span class="hljs-keyword">throws</span> InterruptedException </span>&#123;<br>		Runnable increment = () -&gt; &#123;<br>			<span class="hljs-keyword">for</span>(<span class="hljs-keyword">int</span> i=<span class="hljs-number">0</span>;i&lt;<span class="hljs-number">1000</span>;i++) &#123;<br>				<span class="hljs-keyword">synchronized</span> (CSA01.class) &#123;<br>					i ++;<br>				&#125;<br>			&#125;<br>		&#125;;<br>		List&lt;Thread&gt; list = <span class="hljs-keyword">new</span> ArrayList&lt;&gt;();<br>		<span class="hljs-keyword">for</span>(<span class="hljs-keyword">int</span> i=<span class="hljs-number">0</span>;i&lt;<span class="hljs-number">5</span>;i++) &#123;<br>			Thread t = <span class="hljs-keyword">new</span> Thread(increment);<br>			t.start();<br>			list.add(t);<br>		&#125;<br>		<span class="hljs-keyword">for</span>(Thread t: list) &#123;<br>			t.join();<br>		&#125;<br>		System.out.println(<span class="hljs-string">&quot;i = &quot;</span> + i);<br>	&#125;<br>&#125;<br></code></pre></td></tr></table></figure>
                
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